Taper attachment for lathes.



WILLIAM L. SCHELLENBAOI-I, OF HARTWELL, OHIO.

TAPER ATTACHMENT FOR LATI-IES.

Specification of Letters Patent.

Patented June 16. 1914.

Application filed. August 7, 1913. Serial No. 783,495.

To all whom it may concern.

Be it known that I, WVILLIAM L. SoHnL- LENBAOI-I, a citizen of theUnited States, residing at Hartwell, in the county of Hamilton and Stateof Ohio, have invented certain new and useful Improvements in TaperAttachments for Lathes, of which the following is a specification.

My invention relates to improvements in taper attachment for lathes.

One of its objects is to provide an improved taper attachment adapted tobe housed in the tool carriage and to receive motion from the gears ofthe tool carriage apron.

Another object is to provide a taper at tachment adapted to be fitted totool carriages of usual construction.

Another object is to provide for selectively feeding the cross feedmember of the tool carriage either by the usual cross feed mechanism orby means of the taper attachment.

Another object is to provide improved means to adjust and regulate saidtaper attachment mechanism, and to shift it into and out of operativerelation with the carriage feeding mechanism.

My invention also comprises certain details of form, combination andarrangement, all of which will be more fully set forth in thedescription of the accompanying drawings, in which:

Figure 1 is a front elevation of a lathe tool carriage embodying myinvention. Fig. 2 is a vertical section through the same on line 00 00of Fig. 1. Fig. 3 is a section through the same on line a z of Fig. 2.Fig. 41 is a top plan view of the taper attachment shell and slidedetached. Fig. 5 is a perspective detail, partly in section,illustrating the lower portion of the taper attachment shell, its indexplate and clamping mechanism.

In the accompanying drawings illustrating the preferred embodiment of myinvention, A represents the longitudinally moving member of the toolcarriage frame, which is seated upon ways 2 on the bedplate 3 of thelathe, and is adapted to be fed longitudinally thereon by means of gearsreceiving motion from a lead screw 1 or equivalent member. Mounted upontransverse ways or guides 5 on the member A is a tool carriage member Cadapted to be fed by power transversely of the lathe bed, and mounted inguides 6 on the member C is a tool holder D adapted to be fed by hand.Any of the usual forms or combinations of mechanism employed to feed ordrive the tool carriage members A C may be em ployed. As illustrated twobeveled gears 7 and 8 are splined to the lead screw at and are adaptedto be alternately or selectively engaged with a bevel gear 9 to drive itin either direction. The shaft 22 of gear 9 is adapted to be clutched bya knurl 10 to the hub of gear 12 which is loosely journaled on saidshaft. The gear 11 is keyed to shaft 22 and through a train of gears 13,14, 15, 16, 17 is adapted to engage the usual rack B on the lathe bed tofeed the carriage member A longitudinally upon the lathe bed. Gear 17 isadapted to slide endwise to engage and disengage the rack B. The gear 12by means 'of a train of gears 18 19 is adapted to drive the cross feedscrew 21 to feed the carriage member C transversely of the lathe bed.The foregoing parts may all be of usual construction. 1 My improvedtaper attachment is preferably supported or mounted upon a shell orframe E which is j ournaled upon a vertical axis in a cylindrical recess30 in the forward portion of the carriage member A, and which recess isadapted to be formed to receive such taper attachment in tool carriagesof usual construction. The lower portion of the shell E is a cylindricaltube externally fitting the recess 30. Above the recess 30 andpreventing said shell passing through said recess, are parallel crossbars 31 32 provided on their adjacent faces with V-shaped ways or guidesto receive and guide a traveling head or plate F which has an upwardlyprojecting stud 33 which j our nals in a sliding block or plate 3-1,which is adapted to travel parallel to the lathe bed in a recess 35 inthe member C.

G represents a worm which engages a rack 36 on the under side of plateF. Said worm is mounted upon a shaft 37 having conical ends journaled inconical bearings 33 39 seated in the walls of the shell E. The bearing39 is adjustable to compensate for wear and adapted to be locked toadjusted position by a collar or nut 10.

Shaft 37 carries a beveled gear 41 which is driven by a beveled gear 42j ournaled in a collar 43 seated in the lower end of shell E. A beveledgear 44 below the collar 13 is locked by its hub to the hub of gear 412so that gears 42 and 4 1 will travel together.

A beveled gear 46 keyed to shaft 47 drives gear 44. The shaft 47 isjournaled in brackets 48 49 carried by member A, and a spur gear 50loose on shaft 47 receives motion from gear 15 carried by member A. Akey 52 has a projecting clutch member 53 adapted to lock the gear 50 toshaft 47. The opposite end of said key is attached to a knurl 54 bymeans of which the key 52 and clutch member 53 are shifted endwiserelative to shaft 47 to clutch or release the gear 50.

The shell E is locked in place within the recess 30 by means of a ringor collar keyed to the shell and a nut or threaded collar 61 forcing thering 60 up against a shoulder on shell E. The ring 60 is graduated orprovided with a scale divided into degrees on diametrically oppositequarters of the face of said ring, and either of said scales may bebrought into position with reference to the indicator arrow 63 on themember A. Oneof said scales is employed for turning tapers which arelarger toward the lathe headstock, and the other for tapers largertoward the tail-stock. A clamp 64 serves to lock the ring 60 to itsadjusted position, and to release it for readjustment.

As illustrated the member C is composed of two parts 0 0, one of which 0is stationary with reference to member A while the part 0 is beingdriven by the cross feed screw by means of the gears 18, 19, said part 0being locked relative to member A by the gear 18 and a detachablehousing 65 by which said gear is carried. Said housing 65 as shown inFig. 2 also serves to lock the knurl 54 in position to disengage theclutch member 53 from the gear 50, thus preventing the taper attachmentand lead screw being simultaneously operated. In the position Fig. thelead screw is adapted by its rotation to feed the part 0 transversely ofthe lathe bed. When it is desired to use the taper attachment, the bolts66 are removed permitting the housing 65 and gear 18 to turn on theshaft 22 as an axis, thereby releasing gear 19 from engagement with gear18 and releasing the part c from memher A, and permitting parts 0 0 totravel together, and the travel of the slide F in one direction and theblock 33 in its recess 35 in another direction thereby causing a crossfeed or movement of the parts 0 0 in definite ratio to the longitudinaltravel of member A on the lathe bed, thus providing for the turning oftapers of varying degree according to the angular adjustment of theguide bars 31 32 of shell E with reference to the member A. A halfrotation of the shell E causes a reversal in direction of feed of theslide F. A readjustment of housing 65 to position shifts the taperattachment out of gear and permits the lead screw to be again driventhrough gears 12, 18, 19.

A hand wheel 80 carrying a gear 81 in mesh with the gear 16 enables thegears 14, 15, 16, 17, and 50 to be fed by hand after the knurl 82 hasbeen shifted to release the gear 14 from its connection with powerdriven gear 13, thus providing for the simultaneous feed of member A andmember C by means of the taper attachment, either by power or by hand.

The mechanism herein illustrated and described is capable ofconsiderable modific: tion without departing from the principle of myinvention.

Having described my invention, what I claim is:

1. In a lathe, a tool carriage movable longitudinally of the lathe bed,mechanism to feed said tool carriage, a cross-slide mounted upon saidtool carriage and movable transversely of the lathe bed, a frame carriedby and pivotally adjustable relative to said tool. carriage, a slidemounted upon and adapted to travel across the axis of said pivotedframe, mechanism carried by said pivoted. frame and driven in unisonwith the feeding mechanism of said tool carriage to feed said slide, andmechanism connecting said slide with said cross-slide.

2. In a lathe, a tool carriage movable longitudinally of the lathe bed,mechanism to feed said tool carriage, a cross-slide carried by said toolcarriage and movable transversely of the lathe bed, a frame carried byand pivotally adjustable relative to said tool carriage, said framebeing provided with parallel guides, a slide movable along said guidesand operatively connected to said crossslide, and gear mechanism carriedby said pivotally adjustable frame movable in unison with the feedingmechanism of said tool carriage to drive said slide in definite ratio tothe movements of said tool carriage.

3. In a lathe, a tool carriage movable longitudinally of the lathe bed,mechanism by which said tool carriage may be fed by hand or by power, across-slide mounted upon said tool carriage and movable transversely ofthe lathe bed, a frame pivotally supported by and adjustable relative tosaid tool carriage, a slide carried by and adjustable transversely tothe axis of said frame, mechanism carried by said frame and movable inunison with the feeding mechanism of said tool carriage when either handor power driven, to actuate said slide, and means to operatively connectsaid slide with said cross-slide.

4. In a lathe, a tool carriage movable longitudinally of the lathe bed,mechanism to feed said tool carriage, a cross-slide mounted upon saidtool carriage and movable transversely of the lathe bed, a frame carriedby and pivotally adjustable relative to said tool carriage, a slidemounted in ways on said frame and adjustable transversely of the axis ofsaid frame, and gear mechanism receiving motion from said tool carriagefeed mechanism to feed said slide, said slide being operativelyconnected to said crossslide.

5. In a lathe, a tool carriage movable longitudinally of the lathe bed,mechanism to feed said tool carriage, a cross-slide mounted upon saidtool carriage and adapted to be fed transversely of the lathe bed, alead screw to feed said cross-slide, mechanism receiving motion fromsaid tool carriage feed mechanism adapted to be connected to anddisconnected from said lead screw to drive said lead screw, a framepivotally mounted upon said tool carriage, means to adjust and lock saidframe to varying positions of angularity with reference to said toolcarriage, a slide mounted in ways of said frame and adjustable thereontransversely of the axis of said frame, mechanism to operatively connectsaid slide with said cross-slide, and gear mechanism to be connected toand disconnected from said tool carriage feed mechanism to feed saidslide relative to said frame, said lead screw and slide being adapted tobe interchangeably employed to feed said cross-slide.

6. In a lathe, a tool carriage movable longitudinally of the lathe bed,mechanism to feed said tool carriage, a cross-slide carried by said toolcarriage and movable transversely of the lathe bed, ways parallel withthe lathe bed formed in said crossslide, a sliding block movableparallel with the lat-he bed on said ways, a frame having ways, means toadjust and lock said frame and its ways to varying degrees of angularityrelative to said tool carriage, a slide movable on the ways of saidframe, gear mechanism receiving motion from said tool carriage feedingmechanism, and a stud pivotally connecting said slide and saidsliding-block to feed said cross-slide through said slide transverselyto the lathe bed in definite ratio to the movements of said toolcarriage.

7. In a lathe, a tool carriage movable longitudinally of the lathe bed,mechanism to feed said tool carriage, a cross-slide carried by said toolcarriage and movable transof angularity, a slide mounted in ways on saidframe and movable transversely of the axis of said frame, said slidebeing operatively connected to sald cross-slide and provided with arack, a worm journaled to said frame and engaging the rack of saidslide, and gear mechanism transmitting motion from said tool carriagefeed mechanism to the shaft of said worm.

8. In a lathe in combination with a tool carriage, a cross-slide, andmechanism to drive said tool carriage, a taper attachment comprising aframe pivotally mounted upon and angularly adjustable relative to saidtool carriage, a train of gears carried by said frame to receive motionfrom the tool carriage feeding mechanism, a shaft journaled to saidframe and provided with a worm, said shaft receiving motion from saidtrain of gears, means to engage and disengage said train of gears withsaid tool carriage feeding mechanism, a slide mounted in ways on saidframe and provided with a rack engaging said worm, and mechanism tooperatively connect said slide with said cross-slide.

9. In a lathe, in combination with a tool carriage, a cross-slide, andmechanism to drive said tool carriage, a taper attachment comprising aframe pivotally mounted upon and angularly adjustable relative to saidtool carriage, a train of gears carried by said frame to receive motionfrom said tool carriage driving mechanism, a shaft journaled to saidframe and provided with a worm, said shaft receiving motion from saidtrain of gears, a slide mounted in ways on said frame and provided witha rack engaging said worm, and a block pivotally connected to said slideand adapted to slide in ways carried by said cross-slide.

In testimony whereof I have affixed my signature in presence of twowitnesses.

IVILLIAM L. SCHELLENBACH.

Witnesses:

C. WV. MiLns, W. THORNTON BOGERT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G,

